Browsing Scholarly literature by Author "Nair, M."
Now showing items 1-20 of 53
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Arsenic enrichment in estuarine sediments-impact of iron and manganese mining
Nair, M.; Joseph, T.; Balachandran, K.K.; Nair, K.K.C.; Paimpillii, J.S. (BUET, Bangladesh, 2003)River Mandovi and Zuari, Goa (west coast of India) are flowing through iron and manganese mining areas and are heavily used for iron and manganese ore transport. This region generates 25-30 million tons of mining rejects ... -
Bioaccumulation of toxic metals by fish in a semi enclosed tropical ecosystem
Nair, M.; Jayalakshmy, K.V.; Balachandran, K.K.; Joseph, T. (Taylor and Francis, 2006)Concentrations of Zn, Cd, Pb, and Mn in different tissues of 17 species of fish from a tropical estuary (Cochin backwaters) are presented. The metal electivity index (MSI) was found to be a better tool compared with the ... -
Biogeochemical characteristics of the surface sediments along the western continental shelf of India
Jacob, J.; Jayaraj, K.A.; Rehman, H.H.; Chandramohanakumar, N.; Balachandran, K.K.; Raveendran, T.V.; Joseph, T.; Nair, M.; Achuthankutty, C.T. (Taylor & Francis, 2009)Surface sediments from the western continental shelf of India were analysed for total organic carbon (TOC), total nitrogen (TN), total hydrolysable carbohydrates (TCHO) and proteins (PRT) during the late summer monsoon ... -
Biogeochemical significance of eddies of the eastern Arabian Sea
Rejomon, G.; DineshKumar, P.K.; Nair, M. (Levente Hufnagel (ALÖKI Kft.), 2013)Within the Arabian Sea, the western part is considered to be highly productive when compared to the northern, central and eastern parts of the basin. Despite the contrasting chlorophyll and primary productivity patterns, ... -
Biogeochemistry of the surficial sediments of the western and eastern continental shelves of India
Jacob, J.; Chandramohanakumar, N.; Jayaraj, K.A.; Raveendran, T.V.; Balachandran, K.K.; Joseph, T.; Nair, M.; Achuthankutty, C.T.; Nair, K.K.C.; George, R.; Ravi, Z.P. (Coastal Education and Reserch Foundation, 2008)Even though continental margins cover only about 7-9 % of the world ocean area, they are important sites for organic carbon accumulation and hence play a major role in biogeochemical carbon cycling. Surface sediments from ... -
Biometric and morphometric studies of Perna viridis and Perna indica along the southwest coast of India: a statistical approach
Jayalakshmy, K.V.; Nair, M.; DileepKumar, R.; Vijayan, M. (Horizon Publisher, 2013)The growth indices of the Mussels, Perna viridis and Perna indica collected from the south west coast of India were examined using statistical methods. The Principal Component Analysis (PCA) and Exploratory Factor Analysis ... -
Changes in water quality at Cochin harbour dredging site, south west coast of India
Joseph, T.; Balachandran, K.K.; Nair, M.; Venugopal, P.; Sankaranarayanan, V.N. (NISCAIR, CSIR, 1998)The water quality in the vicinity of the dredging did not show any appreciable change. All dissolved nutrients recorded sharp changes in the water column. After 20 minutes and 2 hours, the conditions at the dredging were ... -
Characterization of phytoplankton size-structure based productivity, pigment complexes (HPLC/CHEMTAX) and species composition in the Cochin estuary (southwest coast of India): special emphasis on diatoms
Meenu, P.; Madhu, N.V.; Ullas, N.; Vineetha, G.; Rehitha, T.V.; Ashwini, R.; Nair, M.; Anil, P. (Elsevier, 2021)Seasonal studies on size-fractionated phytoplankton productivity (biomass and primary production), marker pigments, and species composition and abundance were carried out in the Cochin estuary (CE), located on the southwest ... -
Differential environmental responses of tropical phytoplankton community in the southwest coast of India
Madhu, N.V.; Martin, G.D.; Haridevi, C.K.; Nair, M.; Balachandran, K.K.; Ullas, N. (Elsevier, 2017)Phytoplankton characteristics (biomass, primary productivity, species composition and community structure) were studied in a tropical estuary (Cochin estuary) and adjacent coastal marine region for understanding the factors ... -
Distribution of mesopelagic micronekton in the Arabian Sea during the winter monsoon
Karuppasamy, P.K.; Muraleedharan, K.R.; DineshKumar, P.K.; Nair, M. (NISCAIR, CSIR, 2010)Response of micronekton to oxygen minimum zones in the Arabian Sea (AS) during winter monsoon period was investigated using data of 52 trawls deployed during four winter cruises between 1998 and 2000. Twenty-nine species, ... -
Distribution of multiple antibiotic resistant Vibrio spp across Palk Bay
Sneha, K.G.; Anas, A.; Jayalakshmy, K.V.; Jasmin, C.; VipinDas, P.V.; Pai, S.S.; Pappu, S.; Nair, M.; Muraleedharan, K.R.; Sudheesh, K.; Nair, S. (Elsevier, 2016)Presence of multiple antibiotic resistant microorganisms in marine systems is increasingly a focus of concern as they pose potential health risk to humans and animals. The present study reports the distribution, diversity, ... -
Distribution, contamination status and bioavailability of trace metals in surface sediments along the southwest coast of India
Cyriac, M.; Gireeshkumar, T.R.; Furtado, C.M.; Fathin, K.P.F.; Shameem, K.; Shaik, Adnan; Vignesh, E.R.; Nair, M.; Kocherla, M.; Balachandran, K.K. (Elsevier, 2021)This study investigates the influence of upwelling induced seasonal hypoxia in the sediment-water interface on the distribution, bioavailability and geochemical partitioning of selected trace metals in surficial sediments ... -
Diurnal variations in bacterial and viral production in Cochin estuary, India
Parvathi, A.; Jasna, V.; Haridevi, C.K.; Jina, S.; Greeshma, M.; Breezy, J.; Nair, M. (Springer, 2013)Microbes play a central role in the decomposition and remineralization of organic matter and recycling of nutrients in aquatic environments. In this study, we examined the influence of physical, chemical, and biological ... -
Effect of water quality parameters on the distribution of Pleuromamma (Copepoda-Calanoida) species in the Indian Ocean: A statistical approach
Jayalakshmy, V.K.; Saraswathy, M.; Nair, M. (Springer, 2009)The region between 10 degrees N and 10 degrees S latitude was known to be congenial for distribution of Pleuromamma species. Diel and ontogenetic migrations were observed for Pleuromamma xiphias. Multivariate analyses such ... -
Effects of eyestalk ablation on moulting and growth of penaeid prawn Metapenaeus dobsoni (de Man)
Venkitraman, P.R.; Jayalakshmy, K.V.; Balasubramanian, T.; Nair, M.; Nair, K.K.C. (NISCAIR, CSIR, 2004)Penaeid prawns, Metapenaeus dobsoni of two different size ranges were ablated both unilaterally (UEA) and bilaterally (BEA) and subjected to individual study. The UEA prawns consumed almost the same amount of food as the ... -
Eutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India
Martin, G.D.; Nisha, P.A.; Balachandran, K.K.; Madhu, N.V.; Nair, M.; Shaiju, P.; Joseph, T.; Srinivas, K.; Gupta, G.V.M. (Springer, 2011)The influence of anthropogenic loading on the distribution of soft bottom benthic organisms of a tropical estuary (Cochin backwaters) was examined. The industrial activities were found to be high in the northern and central ... -
Formation of anoxia and denitrification in the bottom waters of a tropical estuary, southwest coast of India.
Martin, G.D.; Muraleedharan, K.R.; Vijay, J.G.; Rejomon, G.; Madhu, N.V.; Shivaprasad, A.; Haridevi, C.K.; Nair, M.; Balachandran, K.K.; Revichandran, C.; Jayalakshmy, K.V.; Chandramohanakumar, N. (Copernicus Publications, 2010)Hydrographic characteristics of the southwest coast of India and its adjoining Cochin backwaters (CBW) were studied during the summer monsoon. Anomalous formation of anoxia and denitrification were observed in the bottom ... -
Fresh water influence on nutrient stoichiometry in a tropical estuary, Southwest coast of India
Martin, G.D.; Vijay, J.G.; Laluraj, C.M.; Madhu, N.V.; Joseph, T.; Nair, M.; Gupta, G.V.M.; Balachandran, K.K. (Corvinus University of Budapest, 2008)Cochin backwaters, a micro tidal estuary, undergo a characteristic transformation from a river dominated system during summer monsoon to a tide-dominant system during pre-monsoon season. The present study observes that as ... -
Geochemical speciation of iron under nearshore hypoxia: A case study of Alappuzha mud banks, southwest coast of India
Mathew, D.; Gireeshkumar, T.R.; Udayakrishnan, P.B.; Shameem, K.; Nayana, P.M.; Deepulal, P.M.; Sarath, R.; Nair, M.; Jaleel, A.K.U.; Balachandran, K.K. (Elsevier, 2022)Studies on the speciation of iron (Fe) and its regulatory roles in the biogeochemical cycling of other elements in the sediments of the Arabian Sea are limited. Changes in the reactivity and crystallinity of geochemical ... -
Geochemistry of surficial sediments along the central southwest coast of India - Seasonal changes in regional distribution
Balachandran, K.K.; Joseph, T.; Nair, M.; Sankaranarayanan, V.N.; Das, V.K.; Sheeba, P. (Coastal Education and Reserch Foundation, 2003)The coastal sediments (129 samples) of central- southwest coast of India, in and around Cochin, the second biggest industrial city along the west coast of India, were analyzed for their textural and geochemical fractions ...